Perhaps you should try some spelling variations:
vai triet » va triet, va trien, ve triet
doanh va » doan va, doanh tai, doanh cua
va doanh » van doanh, vay doanh, va danh
nhan luc » nang luc
thu sach » tu sach, thuat sach, thuoc sach
chat luc » chat xuc, chat lua, chat huu
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
va vai » va bai, va van, va dai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ((ky lang) or (ky dang)) xa hoi. hieu ve ((chat luc) OR (nhan luc)) va doanh va vai triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky dang)) xa hoi. hieu ve ((chat luc) OR (nhan luc)) va doanh va vai triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((ky lang) or (ky dang)) xa hoi. hieu ve ((chat luc) OR (nhan luc)) va doanh va vai triet*".